-4k+2k(5k-6)=-3k-39

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Solution for -4k+2k(5k-6)=-3k-39 equation:


Simplifying
-4k + 2k(5k + -6) = -3k + -39

Reorder the terms:
-4k + 2k(-6 + 5k) = -3k + -39
-4k + (-6 * 2k + 5k * 2k) = -3k + -39
-4k + (-12k + 10k2) = -3k + -39

Combine like terms: -4k + -12k = -16k
-16k + 10k2 = -3k + -39

Reorder the terms:
-16k + 10k2 = -39 + -3k

Solving
-16k + 10k2 = -39 + -3k

Solving for variable 'k'.

Reorder the terms:
39 + -16k + 3k + 10k2 = -39 + -3k + 39 + 3k

Combine like terms: -16k + 3k = -13k
39 + -13k + 10k2 = -39 + -3k + 39 + 3k

Reorder the terms:
39 + -13k + 10k2 = -39 + 39 + -3k + 3k

Combine like terms: -39 + 39 = 0
39 + -13k + 10k2 = 0 + -3k + 3k
39 + -13k + 10k2 = -3k + 3k

Combine like terms: -3k + 3k = 0
39 + -13k + 10k2 = 0

Begin completing the square.  Divide all terms by
10 the coefficient of the squared term: 

Divide each side by '10'.
3.9 + -1.3k + k2 = 0.0

Move the constant term to the right:

Add '-3.9' to each side of the equation.
3.9 + -1.3k + -3.9 + k2 = 0.0 + -3.9

Reorder the terms:
3.9 + -3.9 + -1.3k + k2 = 0.0 + -3.9

Combine like terms: 3.9 + -3.9 = 0.0
0.0 + -1.3k + k2 = 0.0 + -3.9
-1.3k + k2 = 0.0 + -3.9

Combine like terms: 0.0 + -3.9 = -3.9
-1.3k + k2 = -3.9

The k term is -1.3k.  Take half its coefficient (-0.65).
Square it (0.4225) and add it to both sides.

Add '0.4225' to each side of the equation.
-1.3k + 0.4225 + k2 = -3.9 + 0.4225

Reorder the terms:
0.4225 + -1.3k + k2 = -3.9 + 0.4225

Combine like terms: -3.9 + 0.4225 = -3.4775
0.4225 + -1.3k + k2 = -3.4775

Factor a perfect square on the left side:
(k + -0.65)(k + -0.65) = -3.4775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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